I would think that depends on what "residential" is defined as. Here in the US, residential structures are one, two and sometimes three or more stories. These structures are made from a plethora of materials and or combinations thereof. Though, wood is the most dominant.
Of those affect the natural frequency of a structure including what the lateral resisting system is, which lends to the stiffness part of the analysis. Most are shearwalls but that is not always a given.
Please elaborate more.
Regards,
Qshake
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